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version I have, has a decent amount of padding (moulded foam), at the back, and the sides are fairly structured, and the fabric is quite hard wearing, but you wouldn't want to put it in the hold, if that's what you're asking.
It does get heavy when you pack stuff in, shoes, clothes, travel toiletries, laptop, etc, but it's fine as long as you've got the sternum strap closed so it doesn't pull your shoulders back..
reading this review of it, they've got the weight down as 1.7kg
https://www.tactical-kit.co.uk/arcteryx-blade-30-backpack-black-8579-p.asp
I'm surprised how heavy that Arcteryx is, especially for a technical bag. Has it a lot pockets/padding?